Valve.



A. SGHWEIZER.

VALVE.

APPLICATION FILED APR. 8, 1912.

Patented Nov. 26, 1912.

ADOLF SCHWEIZER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE HILL PUMP VALVECO.,

OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

VALVE.

Specification of Letters Patent.

Patented Nov. 26, 1912.

To all whom it may concern:

Be it known that I, ADoLF SCHWEIZER, a citizen of the United States,residing at Chicago, in'the county of Cook and State of Illinois, haveinvented new and useful Improvements in Valves, of which thefollowing'is a full, clear, concise, and exact description, referencebeing had to the accompanying drawings, forming a part of thisspecification. v

My invention relates to im rovements in valves, and particularly to c apvalves for use in pumps and the like.

One of the objects of my invention is to improve the construction ofcertain parts of the valve whereby the same may be efficient inoperation and may be manufactured at a minimum expense.

For the purpose of disclosing my invention I have illustrated in theaccompanying drawings one embodiment thereof. 7

In said drawings Figure 1 represents a transverse sectional-view of avalve embodying my invention; Fig. 2 is a top plan view thereof; Fig. 3is a disassembled sectional view of the backing plate of the valve andthimble; and Fig. 4 is a transverse sectional view of the clamping ringof the valve.

Referring to the embodiment of my invention illustrated, the valve seatcomprises a circular seating member 1, screw threaded as at 2 and havingan annular rim as at 3.

Suitable ports or openings 4 extend through the seat to permit the waterto pass therethrough when the valve 5 thereof is opened. The valve 5comprises a backing plate 6, which is stamped out of sheet metal and isprovided with a downwardly extending annular flange 7. The center ofthis backing plate is concaved, as at 8, to give strength and rigidityto the plate. This plate is provided with a thimble 9 which passesthrough a central opening in the plate and is swaged over the side wallsof the opening to hold the thimble in place,

Secured to the face of the plate 6 are packing rings 11 and 12 which areheld in position by means of the clam ing ring 13. This ring fitsbetween the pac ing rings and is provided with wedge-shaped surfaces 14and 15 which tend to hold the packing in osition. The clam ing ring,like the backmg plate, is stampe from sheet metal and is secured to thebacking plate by means of suitable rivets 16. The valve is guided by asuitable stem 17, screw threaded as at 18, into the valve seat, andprovided with a coiled spring 19 interposed between the backing plateand shoulder 20 formed on a nut 21 secured on the stem 17. This-coiledspring serves to hold the valve seated. A suitable locking nut 22prevents the nut 21 from becoming disengaged from the stem.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. A clap valve comprising a backing plate formed of sheet metal havin acentral thimble swaged over the walls 0 a central opening in saidbacking plate, packing rings for said backing plate, and a clamping ringfor securing said packing rings to said backing plate.

2. A clap valve comprising a backing plate stamped from sheet metal andhaving downwardly extending annular flanges, a thimble for said backingplate extending through the central opening therein and swaged over thewalls of said opening for securing it in position, packing rings forsaid backing plate, and a clamping'ring for holding said packing ringsin posit-ion stamped from sheet metal and fastened to said backingplate.

3. A clap valve comprising a backing plate formed from sheet metalhaving a'central opening therein, a thimble extending through saidopening, packing rings for said backing plate, and a clamping ring forsecuring sald packing to the bac -ing plate.

4. clap valve comprising a backing plate stamped from sheet metal havina central opening and downwardly extendlng annular fianges, a thimblefor said backing plate extending through said central opening, packingrings for said backing plate, and a clamping ring for holding saidpacking in posltion also stamped from sheet metal and fastened to saidbacking plate.

In witness whereof, I have hereunto subscribed my name in the presenceof two witnesses.

ADOLF SCHWEIZER; Witnesses W. PERRY HAHN, MABEL REYNoLns.

